Erik J. Barzeski said on January 22, 2008:

According to the New York City Police Department, Ledger was found dead in his apartment in the SoHo neighborhood of Manhattan on January 22, 2008.

Sewell Chan of The New York Times writes: "At 3:31 p.m., a masseuse arrived at Apartment 5A of 421 Broome Street in SoHo for an appointment with Ledger, the police said. The masseuse was let in to the home by a housekeeper, who then knocked on the door of Ledger's bedroom. When no one answered, the housekeeper and the masseuse opened the bedroom and found Ledger unresponsive. They shook him, but he did not respond. They immediately called the authorities. The police said they did not suspect foul play and said they found pills near his body."

That illustrates the problem (and is pretty breaking news at the moment).

I wasn't able to find much, as I said, in early digging. The plugin clearly seems to look for the "<blockquote" string and replace it. I think it should just replace "[quote" strings.